Question

The cost of levelling a rectangular field at
50 per square metre is 30,000. If its length
and breadth are in the ratio of 3:2, then find
its perimeter.​

Answer 1

Answer:

Find it on meritanation.

Answer 2

The perimeter of field is 20 cm

Step-by-step explanation:

Cost of leveling 1 sq.m. = Rs.50

Area leveled at rs.30000= $\frac{30000}{50}=600m^2$

The ratio of length and breadth are 3:2

Let the ratio be x

So, Length = 3x

Breadth = 2x

Area of field = length \times Breadth = $3x \times 2x$

So, $3x \times 2x =600$

$6x^2 =600$

$x^2 =100$

$x=\sqrt[2]{100}$

$x=10$

Length = 3x = 3(2) = 6 m

Breadth = 2x = 2(2)=4 m

Perimeter of rectangular field = 2(l+b)=2(6+4)=20 cm

Hence The perimeter of field is 20 cm

#Learn more:

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